Armrest



FIG. 1 is a perspective view of an armrest;

FIG. 2 is a right elevation view of FIG. 1, the left elevation view being a mirror image thereof;

FIG. 3 is a bottom plan view of FIG. 1;

FIG. 4 is a top plan view of FIG. 1;

FIG. 5 is a front elevation view of FIG. 1; and,

FIG. 6 is a rear elevation view of FIG. 1.

The broken lines depict portions of the armrest that form no part of the claimed design. 

CLAIM The ornamental design for an armrest, as shown and described. 